There's also nothing wrong with the tube-type wheel with the lug tire on it in your picture. It isn't one of the Firestone RH-5 "widowmakers" and any truck tier shop worthy of the name shouldn't have a problem with servicing them. Try a store that specializes in farm equipment tires- - - -they should be ready, willing and able to do the job for you. Shops that do nothing but passenger car and light truck tire service just don't know the difference in what's dangerous and what's safe.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!